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Twilight: Blue light filter10.2 b323 (Pro)

Twilight: Blue light filter v10.2 b323 (Pro)

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Twilight: Blue light filter / Specifications

Twilight: Blue light filter / Screenshots

Twilight: Blue light filter 10.2 b323 (Pro)
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Twilight: Blue light filter / Video Trailer or Demo

Twilight: Blue light filter / Description

Are you having trouble falling asleep? Are your kids hyperactive when playing with the tablet before bed time?
Are you using your smart phone or tablet in the late evening? Twilight may be a solution for you!

WARNING: Android O+ does no allow the app to cover your notifications any more..

CAUTION: Android TV installation got more complicated as Google did not implement the overlay permission screen please see below:
https://twilight.urbandroid.org/how-to-install-twilight-on-android-tv-android-6/

Recent research suggests that exposure to blue light before sleep may distort your natural (circadian) rhythm and cause inability to fall asleep.

The cause is the photoreceptor in your eyes called Melanopsin. This receptor is sensitive to a narrow band of blue light in the 460-480nm range which may suppress Melatonin production - a hormone responsible for your healthy sleep-wake cycles.

In experimental scientific studies it has been shown an average person reading on a tablet or smart phone for a couple of hours before bed time may find their sleep delayed by about an hour.

The Twilight app makes your device screen adapt to the time of the day. It filters the flux of blue light emitted by your phone or tablet after sunset and protects your eyes with a soft and pleasant red filter. The filter intensity is smoothly adjusted to the sun cycle based on your local sunset and sunrise times.


Documentation
http://twilight.urbandroid.org/doc/

Get more from Twilight
1) Bed reading: Twilight is more pleasant on the eyes for night reading. Especially as it is able to lower the screen backlight far below the ability of the backligt controls on your screen

2) AMOLED screens: We have tested Twilight on an AMOLED screen for 2.5 years without any sign of depletion or over-burning. If properly configured Twilight causes less light emission (by enabling dimming) with more equal light distribution (dark areas of the screen such as the status bar get tinted). This may in fact increase your AMOLED screen life time.

Basics on circadian rhythm and the role of melatonin
http://en.wikipedia.org/wiki/Melatonin
http://en.wikipedia.org/wiki/Melanopsin
http://en.wikipedia.org/wiki/Circadian_rhythms
http://en.wikipedia.org/wiki/Circadian_rhythm_disorder

Permissions
- location - to find out your current sunset/surise times
- running apps - to stop Twilight in selected apps
- write settings - to set back-light
- network - access smartlight (Philips HUE) to shield you household light from blue

Automation (Tasker or other)
https://sites.google.com/site/twilight4android/automation

Related scientific research

Amplitude Reduction and Phase Shifts of Melatonin Cortisol and Other Circadian Rhythms after a Gradual Advance of Sleep and Light Exposure in Humans Derk-Jan Dijk & Co 2012

Exposure to Room Light before Bedtime Suppresses Melatonin Onset and Shortens Melatonin Duration in Humans Joshua J. Gooley Kyle Chamberlain Kurt A. Smith & Co 2011

Effect of Light on Human Circadian Physiology Jeanne F. Duffy Charles A. Czeisler 2009

Efficacy of a single sequence of intermittent bright light pulses for delaying circadian phase in humans Claude Gronfier Kenneth P. Wright & Co 2009

Intrinsic period and light intensity determine the phase relationship between melatonin and sleep in humans Kenneth P. Wright Claude Gronfier & Co 2009

The Impact of Sleep Timing and Bright Light Exposure on Attentional Impairment during Night Work Nayantara Santhi & Co 2008

Short-Wavelength Light Sensitivity of Circadian Pupillary and Visual Awareness in Humans Lacking an Outer Retina Farhan H. Zaidi & Co 2007

High sensitivity of the human circadian melatonin rhythm to resetting by short wavelength light. Lockley SW & Co. 2003

Sensitivity of the human circadian pacemaker to nocturnal light: Jamie M Zeitzer Derk-Jan Dijk & Co 2000

For a desktop try RedShift (Linux) or on Windows there are also blue light flux filtering apps.

Show More >

Twilight: Blue light filter / What's New in v10.2 b323 (Pro)

- Mod Info:
Pro features unlocked - no additional key needed;

9.9
-Dim up to 85%
-Updates in French and Indonesian (many thanks)
-Fix for black icons on widget
9.8
- App usage stats
-Status bar collapsing is now a separate option in settings

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